Add vendored dependencies for EPEL and make it build there

.gitignore

@@ -1 +1,2 @@
 /below-0.2.0.crate
+/below-0.2.0-vendor.tar.gz

rust-below.spec

@@ -4,6 +4,14 @@
 
 %global crate below
 
+%if 0%{?el8}
+# disabling this as it chokes on the vendored dependencies
+%undefine __brp_mangle_shebangs
+# el8 doesn't have these macros
+%global __crates_url https://crates.io/api/v1/crates/
+%global crates_source %{__crates_url}%{crate}/%{version}/download#/%{crate}-%{version}.crate
+%endif
+
 %global forgeurl https://github.com/facebookincubator/below
 %global commit 584fdef23f4c7a95a009b84746bb193b68843c1a
 
@@ -25,10 +33,25 @@ Patch1:         below-fix-tests.patch
 Source1:        %{forgeurl}/raw/%{commit}/etc/below.service
 Source2:        %{forgeurl}/raw/%{commit}/etc/logrotate.conf
 Source3:        %{forgeurl}/raw/%{commit}/README.md#/README-upstream.md
+# vendored dependencies for EPEL
+# update with ./update-vendor-tarball.sh after bumping the specfile version
+Source4:        %{crate}-%{version}-vendor.tar.gz
 
 ExclusiveArch:  %{rust_arches}
 
+%if 0%{?el8}
+BuildRequires:  rust-toolset
+# for libbpf-sys
+BuildRequires:  kernel-headers
+BuildRequires:  elfutils-libelf-devel
+BuildRequires:  libbpf-devel
+BuildRequires:  zlib-devel
+# for libbpf-cargo
+BuildRequires:  clang
+BuildRequires:  rustfmt
+%else
 BuildRequires:  rust-packaging
+%endif
 BuildRequires:  systemd-rpm-macros
 
 %global _description %{expand:
@@ -54,14 +77,16 @@ atop's design and style decisions.}
 %package     -n %{crate}
 Summary:        %{summary}
 
+Recommends:     logrotate
+
 %description -n %{crate} %{_description}
 
 %files       -n %{crate}
 %license LICENSE
 %doc README.md docs
-%{_bindir}/%{crate}
+%attr(755, root, root) %{_bindir}/%{crate}
 %{_unitdir}/%{crate}.service
-%{_sysconfdir}/logrotate.d/%{crate}.conf
+%config(noreplace) %{_sysconfdir}/logrotate.d/%{crate}.conf
 %dir %{_localstatedir}/log/%{crate}
 
 %post        -n %{crate}
@@ -74,12 +99,20 @@ Summary:        %{summary}
 %systemd_postun_with_restart %{crate}.service
 
 %prep
+%if 0%{?el8}
+%setup -q -n %{crate}-%{version}
+%patch1 -p1
+%cargo_prep -V 4
+%else
 %autosetup -n %{crate}-%{version_no_tilde} -p1
 %cargo_prep
+%endif
 cp -p %{SOURCE3} README.md
 
+%if 0%{?fedora}
 %generate_buildrequires
 %cargo_generate_buildrequires
+%endif
 
 %build
 %cargo_build
@@ -97,6 +130,12 @@ install -d -m1777 %{buildroot}%{_localstatedir}/log/%{crate}
 %endif
 
 %changelog
+* Wed Jun 30 2021 Davide Cavalca <dcavalca@fedoraproject.org> - 0.2.0-3
+- Add vendored dependencies for EPEL and make it build there
+- Mark logrotate config file as a config(noreplace)
+- Add recommends for logrotate
+- Fix permissions for the below binary
+
 * Mon Jun 28 2021 Davide Cavalca <dcavalca@fedoraproject.org> - 0.2.0-2
 - Install upstream systemd unit
 - Install upstream logrotate config

sources

@@ -1 +1,2 @@
 SHA512 (below-0.2.0.crate) = 4f72620ed5c66ead42b5ab50c2a7e975956a6511b23e41056a4452274b7bc8172729b0ff44d9ce524d43024471236d093111a7e9d44239efed0a5a1e38127944
+SHA512 (below-0.2.0-vendor.tar.gz) = 83bb10cc37c6f6e24c2fd0a0e7a7f9eb05894002f9f74d0e3aace5900f2c5b5aa9b964131fd94c9384b0e5366716f0f5a93d84fbcaae23c20ea3bb146a1470c1

update-vendor-tarball.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+name='below'
+specfile="rust-${name}.spec"
+version=$(rpm -q --qf '%{VERSION}\n' --specfile "$specfile" | head -1)
+nv="${name}-${version}"
+crate="${nv}.crate"
+vendor_tarball="${nv}-vendor.tar.gz"
+
+if [ -f "$vendor_tarball" ]; then
+  echo "${vendor_tarball} already exists, aborting"
+  exit 1
+fi
+
+[ -f "$crate" ] || spectool -g "$specfile"
+tardir="$PWD"
+workdir=$(mktemp -d)
+trap 'rm -rf "$workdir"' EXIT
+
+tar xvzf "$tardir/$crate" -C "$workdir"
+(cd "${workdir}/${nv}" && \
+  cargo vendor && \
+  tar cvzf "${tardir}/${vendor_tarball}" vendor/)
+
+exit 0